I have a couple of MacBooks. Using a Trifield EMF meter with radio/microwave capability, if I hold the meter near the laptop (where I understand the wifi antenna is located), I receive blips ranging from 4-10 milligauss. In Radio/Microwave mode it does blips from 0.1 to about 1.5 mW/cm^2).
The router itself, near its antenna, does movement between about 0.5 to 2.5 (0.5mW/cm^2 to 2.5/cm^2). No wireless devices are connected, but the wireless antenna is turned "on" (cannot be turned off).
I work in a high security field and am wondering if the wifi is actually transmitting even though it is set to "off" in the operating system. E.g., due to a root kit or other virus.
Can other components in a MacBook cause quick fluctuations of this much? I would expect it to remain mostly constant if Bluetooth/wifi were not transmitting